Agreed.
The ‘Thing’ of it is though, there is always the option for GM to use an easily concealed, sensitive, inexpensive, reliable and well-proven technology like any $10.00
K-Style Thermo-Couple offers as shown in the exemplar images of the
Plug-In Thermister that I use with my Klein MM700 Digital Multi-Meter below:
Keep in mind that right now... if you walk over to your HVAC Wall Modular Thermostat backed up by a pair of "AA" Batteries ...there is One of
THESE "Things" hidden inside ...just under the back cover... working away at Reading Out the 'Cabin' Temp of that Room you're standing in all the time; ready to signal the Air Handler and Outside Compressor at a moments notice and either Turn It On ...or Turn it OFF.
And IF such a ‘Thing’;
an Object Hardly Larger than a Mustard Seed on “The Business End” of it, were likewise incorporated or hidden inside of the Chevrolet Equinox HVAC Control Module, then it becomes invisible to any easy discovery and EZ replacement:
https://www.summitracing.com/parts/ado-84612974/make/chevrolet/model/equinox/year/2020
After all... If GM can turn what should be a simple repair by any R&R of this single sensor component into a "Dealer Only Repair" requiring the arcane replacement of this entire Module in order to solve the problem... Based upon their Dealership Business Model, it makes perfect sense to do so.